Lock and latch.



1,059,932. Jygl.

APPLICATION FILED AUG. 19, 1912.

'A. DRURY.

LOOK AND LATCH.

Patented Apr. 22, 1913.

mwmmNM y will ll coLumnM PLANOGRAPH C0,, WASHINGTON. u c.

ARCHIE DRURY, OF ELGIN, KANSAS.

LOOK AND LATCH.

To all whom it may concern Be it known that I, ARoHIn DRURY, a citizenof the United States, residing at Elgin, in the county of Chautauqua andState of Kansas, have invented certain new and useful Improvements inLocks and Latches; and I do declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

This invention relates to looks and latches, and more especially tothose deviceswherein these elements are combined; and the object of thesame is to produce a combined lock and latch which has no springs in it,and yet wherein the latch can be unlatoh'ed by turning the knob ineither direction, can be locked with a key and unlocked by the samemeans, and has a night latch fastener if desired. This object is carriedout by constructing the device in the manner hereinafter more fullydescribed and claimed and as shown in the drawings wherein Figure l isan elevation of this lock with the near face plate removed, showing thelatch bolt as projected and the locking mechanism and night latch inaction. Figs. 2, 3 and 4 are sectional views on the lines 22, 33 and tlof Fig. 1.

In the drawings the numeral 1 designates the casing whose details neednot be described excepting that at one end it is pierced with an opening2 through which protrudes the beveled end of the latch bolt 3, the bodyof the latter within the casing having an enlargement 4 provided with anopening 5 within which moves a double-cam 6 having a'square opening forthe passage of the knob-spindle (not shown) so that the cam 6 can beturned in either direction within the opening 5 to retract the latchbolt 3 and disengage its projecting end from the keeper, in a mannerwell understood. Back of the enlargement 4, the body of the bolt isagain reduced as at 7 to about the size of the front end, and pivoted tothis reduced portion at 8 is the L-shaped inner end 9 of a weight 10pivotally supported at its angle at the point 11 within the casing asshown. The body of the weight normally stands oblique while the tip ofthe bolt is projected as seen in Fig. l, but when the knob spindle isturned in either direction the cam 6 forces the enlargement 4 backward,and the pivotal Specification of Letters Patent.

Application filed August 19, 1912.

Patented Apr. 22, 1913. Serial No. 715,871.

point 8 is caused to move around the main pivot 11 so that the heavy endof the weight 10 rises. In order to prevent its rising too high withinthe casing and becoming stuck alongside the latch bolt 3, a stop 12 maybe provided within the casing, although this might be formed by passingthrough the casing one of the screws ordinarily em ployed for holdingthe same on the door. The latch bolt is stamped or cast so that it isreversible, and by removing the pivot 8 (which is preferably a smallscrew) the boltcan be turned with its beveled tip to either side so asto accommodate the latch to whatever position is required of it by theforce of circumstances. This much of my invention is complete withinitself, but by preference I add a look as follows:

The numeral 13 designates a tumbler having a slot 14 in its body movingover a suitable guide 15 which also may be one of the screws that attachthe casing to the door, and the front end 16 of this tumbler is adaptedto move over a pin or projection 17 on the heavy end of the weight 10when the latter is depressed, while the rear end 18 of the tumbler movesloosely through a suitable .loop' carried within the casing 1 and has aslight vertical play therein. hen the tumbler is projected as seen inFig. 1, its front end engages the projection 17 and the weight cannot beraised-therefore the latch bolt cannot be retracted by the turning ofthe knob; on the other hand, it will be clear that when the tumbler isretracted: 99 the front end disengages the projection 17' and the latchmay be used as usual. The means for moving this tumbler may be any ofthose ordinarily employed in looks a of this kind, but for sake ofsimplicity and again in order to avoid the use of any spring or springswithin this device, I provide its lower edge with a recess or notch 19adjacent the key hole 20 so that when a key (not shown) is passed intothe hole 100 and turned, its wards will engage said notch 19 and liftits inner end of the tumbler 13 and move it either inward or outwardaccording as is necessary. In this action a project-ion 21 on the loweredge of the rear end 18 of the tumbler is lifted over the lower side ofthe loop 22 in an ordinary and well known manner. Although notillustrated herein, there might be a plurality of said tumblers 13,located side by side, in no which case the wards of the key would beshaped to correspond with the notches 19 in their lower edges, as usual.Further illustration and amplification of this detail is not considerednecessary, because these features are well known. The only claim tonovelty in the present case lying in the use of this detail is that itcooperates with a projection 17 on the heavy end of a weight 10, and thelatter when held down by this tumbler or these tumblers locks the mainbolt 3 against movement in either direc tion by the rotation of theknob.

At is shown a night latch, pivoted at 26 through an opening in the rearend of the casing and adapted to be turned so as to revent the rearwardmovement of the latch olt 3, whether it is locked or not. This also is awell known detail, and no novelty is claimed therefor further that it iscombined with the remainder of the mechanism to produce a completewhole, yet without the use of any spring or springs whatever. All partsare by preference of casting, suitably treated to prevent rust, andchanges in specific details may be made without departing from theprinciple of my invention.

What is claimed as new is:

1. A combined springless latch and lock comprising a casing having anopening in its front edge and a transverse opening for the passage ofthe knob spindle, the latch bolt whose front end moves through saidopening in the edge of the casing and whose body has an enlargementprovided with an opening adapted to inclose the double cam of the knobspindle, an L-shaped weight pivoted at its angle within said casing withits foot rising from said pivot and connected with said bolt, a lateralprojection on said weight, a tumbler whose front end is adapted to moveover this projection, a guide for the tumbler, and means for projectingand retracting said tumbler.

2. In a combined latch and lock, the combination with a casing having anopening in its front edge, a key hole, and a transverse opening for thepassage of the knob spindle, a double cam adapted to be mounted on saidspindle, and the latch bolt whose front end moves through said openingin the edge of the casing and whose body has an enlargement providedwith an opening surrounding said cam and a reduced projection in rear ofsaid enlargement; of an L-shaped weight pivoted at its angle within saidcasing with its foot rising from said pivot and connected with thereduced rear end of said bolt, a lateral projection on the heavy end ofsaid weight, a tumbler whose front end is adapted to move over thisprojection and whose body is slotted, aguide over which said slot moves,and a loop loosely embracing the rear end of said tumbler, this endhaving a notch in its lower edge and a projection adapted to be liftedover the loop by the turning of a key inserted in said keyhole.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

ARCHIE DRURY.

Witnesses LEE B. HAUGHN, HARVEY PARKER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G. A

